60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
/*
|
|
* \brief Helper functions for the Lock implementation
|
|
* \author Norman Feske
|
|
* \author Alexander Boettcher
|
|
* \date 2009-10-02
|
|
*
|
|
* For documentation about the interface, please revisit the 'base-pistachio'
|
|
* implementation.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2009-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
/* Genode includes */
|
|
#include <base/native_types.h>
|
|
#include <base/thread.h>
|
|
#include <base/stdint.h>
|
|
|
|
/* NOVA includes */
|
|
#include <nova/syscalls.h>
|
|
#include <nova/util.h>
|
|
|
|
|
|
extern int main_thread_running_semaphore();
|
|
|
|
|
|
static inline bool thread_check_stopped_and_restart(Genode::Thread_base *thread_base)
|
|
{
|
|
Genode::addr_t sem = thread_base ?
|
|
thread_base->tid().exc_pt_sel + Nova::SM_SEL_EC :
|
|
main_thread_running_semaphore();
|
|
|
|
Nova::sm_ctrl(sem, Nova::SEMAPHORE_UP);
|
|
return true;
|
|
}
|
|
|
|
|
|
static inline void thread_switch_to(Genode::Thread_base *thread_base) { }
|
|
|
|
|
|
static inline void thread_stop_myself()
|
|
{
|
|
using namespace Genode;
|
|
using namespace Nova;
|
|
|
|
addr_t sem;
|
|
Thread_base *myself = Thread_base::myself();
|
|
if (myself)
|
|
sem = myself->tid().exc_pt_sel + SM_SEL_EC;
|
|
else
|
|
sem = main_thread_running_semaphore();
|
|
|
|
if (sm_ctrl(sem, SEMAPHORE_DOWNZERO))
|
|
nova_die();
|
|
}
|